1 / 2

Station 3 – Inhibitor poisons

Example 1 : Snake Venom Inhibitor name : A protein called fasciculation is found in snake venom.

mahdis
Download Presentation

Station 3 – Inhibitor poisons

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Example 1: Snake Venom Inhibitor name: A protein called fasciculation is found in snake venom. Function: Inhibits Acetylcholinesterase which is an enzyme used to degrade a neurotransmitter called Acetylcholine (Serotinin is another example of a neurotransmitter that you should have heard of from GCSE). How: Fasciculation acts as a competitive inhibitor preventing the acetylcholine from being broken down by Acetylcholinesterase after an impulse transmission. Effect: In skeletal muscle fasciculations stop nerve impulses from being transmitted and hence stop muscle contraction. Eventually this will lead to flaccid paralysis. Normal (no venom) Station 3 – Inhibitor poisons After venom

  2. Example 2: Cyanide poisoning Inhibitor name: Potassium cyanide Function: Inhibits a vital respiratory enzyme called cytochromeoxidase (found inside mitochondria) How: Cytochromeoxidase normally combines oxygen and hydrogen together to form water and allows ATP creation. Station 3 – Inhibitor poisons Cyanide non competitively inhibits chytochromeoxidase changing the shape of its active site meaning no ATP creation. Effect: Any reactions requiring ATP are no longer supplied. The body eventually has no energy supply causing total cell failure … and death even though all products for respiration still present.

More Related